I feel that recently your site’s access speed is very slow, and mobile data sometimes can’t get through.
Coordinates: Hunan Mobile; I won’t include the specific locations from the earlier hops, it seems a bit detoured?
The typical ping latency is over 250 ms.
Did you recently change the proxy server?
https://xjtu.app/t/topic/12916/7
Measured incorrectly, should test the return route:
https://xjtu.app/uploads/default/original/2X/7/7242a313aad3328d87e660616152f8f94d006e11.webp
Sorry I forgot to look at this post, previously there was a time when the 
crashed. I thought it was because of CF’s CDN, so it would be routed around.
But that’s normal; mobile exits are inherently not very good~